UV Lecture 2 - Absorption of Electromagnetic Radiation
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Questions and Answers

Which process does NOT typically occur in a molecule upon absorption of electromagnetic radiation?

  • Isomerization
  • Vaporization (correct)
  • Excitation
  • Decay

What can a molecule undergo upon absorption of electromagnetic radiation?

  • Solidification
  • Oxidation
  • Fusion
  • Ionization (correct)

Which of the following is NOT a common result of a molecule absorbing electromagnetic radiation?

  • Formation of new elements (correct)
  • Increase in kinetic energy
  • Change in molecular structure
  • Breakage of chemical bonds

What is one of the possible outcomes for a molecule after absorbing electromagnetic radiation?

<p>Emission of light (D)</p> Signup and view all the answers

What is a potential consequence for a molecule after absorbing electromagnetic radiation?

<p>Transition to an excited state (A)</p> Signup and view all the answers

Which of the following is a region of the electromagnetic spectrum?

<p>Radio waves (A)</p> Signup and view all the answers

Which of these is NOT a region of the electromagnetic spectrum?

<p>Vibrational energy levels (A)</p> Signup and view all the answers

Which pair of items in the list are both regions of the electromagnetic spectrum?

<p>Energy Radio waves, Infrared (A)</p> Signup and view all the answers

Which of the following is an incorrect pairing of a term and its definition?

<p>Nuclear spin levels - a region of the electromagnetic spectrum (C)</p> Signup and view all the answers

Which of the following is a type of energy level, rather than a region of the electromagnetic spectrum?

<p>Vibrational energy levels (A)</p> Signup and view all the answers

What is the relationship between the frequency and wavelength of light or radiation?

<p>Bed is directly proportional to frequency and inversely proportional to wavelength (A)</p> Signup and view all the answers

What can be concluded about the relationship between the wavelength and frequency of light or radiation?

<p>As the wavelength decreases, the frequency increases (D)</p> Signup and view all the answers

Which of the following statements about the relationship between wavelength and energy of light or radiation is correct?

<p>As wavelength decreases, energy increases (D)</p> Signup and view all the answers

What can be inferred about the nature of light or radiation described in the text?

<p>It is a wave-like phenomenon (C)</p> Signup and view all the answers

What is the main concept or principle being described in the given text?

<p>The inverse relationship between frequency and wavelength of electromagnetic radiation (D)</p> Signup and view all the answers

What happens when visible light interacts with a molecule?

<p>It moves electrons from a filled bonding MO to an unfilled anti-bonding MO (B)</p> Signup and view all the answers

How does visible light impact the electron configuration in a molecule?

<p>It excites electrons from filled bonding MOs to unfilled anti-bonding MOs (C)</p> Signup and view all the answers

What type of MO does visible light typically affect in a molecule?

<p>Filled anti-bonding MO (B)</p> Signup and view all the answers

Which type of molecular orbital receives electrons when exposed to visible light?

<p>Anti-bonding MO (C)</p> Signup and view all the answers

In the context of molecular orbitals, what role does visible light play?

<p>Exciting electrons from filled bonding to unfilled anti-bonding MOs (A)</p> Signup and view all the answers

What is the term used to describe the different types of excitations that occur when a molecule absorbs energy?

<p>Transition states (D)</p> Signup and view all the answers

What is required for each type of transition state?

<p>A distinctive energy (ΔE) (C)</p> Signup and view all the answers

What process is being described in the given text?

<p>Molecular absorption spectroscopy (B)</p> Signup and view all the answers

Which of the following is NOT a type of molecular excitation that could be referred to in the text?

<p>Nuclear excitation (C)</p> Signup and view all the answers

What does the abbreviation 'ΔE' stand for in the context of the given text?

<p>Energy difference (B)</p> Signup and view all the answers

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